opencart V2.1.0.1 extension upload issue

I facing extension upload issue,already setup ftp
below is error code,anyone can help?

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

OK

<b>Warning</b>: mkdir(): No such file or directory in <b>/home/u189873305/public_html/vqmod/vqcache/vq2-admin_controller_extension_installer.php</b> on line <b>82</b><b>Warning</b>: move_uploaded_file(/home/u189873305/public_html/system/upload/temp-L7jlLhcrS7CbuxIXWlnppG3Dh86gr6Cw/upload.zip): failed to open stream: No such file or directory in <b>/home/u189873305/public_html/vqmod/vqcache/vq2-admin_controller_extension_installer.php</b> on line <b>117</b><b>Warning</b>: move_uploaded_file(): Unable to move '/tmp/phpxxlPCd' to '/home/u189873305/public_html/system/upload/temp-L7jlLhcrS7CbuxIXWlnppG3Dh86gr6Cw/upload.zip' in <b>/home/u189873305/public_html/vqmod/vqcache/vq2-admin_controller_extension_installer.php</b> on line <b>117</b>{"step":[],"overwrite":[],"error":"File could not be found!"}